| /****************************************************************************** |
| * |
| * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA |
| * |
| * The full GNU General Public License is included in this distribution in the |
| * file called LICENSE. |
| * |
| * Contact Information: |
| * Intel Linux Wireless <ilw@linux.intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| *****************************************************************************/ |
| |
| #ifndef __iwl_agn_rs_h__ |
| #define __iwl_agn_rs_h__ |
| |
| struct iwl_rate_info { |
| u8 plcp; /* uCode API: IWL_RATE_6M_PLCP, etc. */ |
| u8 plcp_siso; /* uCode API: IWL_RATE_SISO_6M_PLCP, etc. */ |
| u8 plcp_mimo2; /* uCode API: IWL_RATE_MIMO2_6M_PLCP, etc. */ |
| u8 plcp_mimo3; /* uCode API: IWL_RATE_MIMO3_6M_PLCP, etc. */ |
| u8 ieee; /* MAC header: IWL_RATE_6M_IEEE, etc. */ |
| u8 prev_ieee; /* previous rate in IEEE speeds */ |
| u8 next_ieee; /* next rate in IEEE speeds */ |
| u8 prev_rs; /* previous rate used in rs algo */ |
| u8 next_rs; /* next rate used in rs algo */ |
| u8 prev_rs_tgg; /* previous rate used in TGG rs algo */ |
| u8 next_rs_tgg; /* next rate used in TGG rs algo */ |
| }; |
| |
| /* |
| * These serve as indexes into |
| * struct iwl_rate_info iwl_rates[IWL_RATE_COUNT]; |
| */ |
| enum { |
| IWL_RATE_1M_INDEX = 0, |
| IWL_RATE_2M_INDEX, |
| IWL_RATE_5M_INDEX, |
| IWL_RATE_11M_INDEX, |
| IWL_RATE_6M_INDEX, |
| IWL_RATE_9M_INDEX, |
| IWL_RATE_12M_INDEX, |
| IWL_RATE_18M_INDEX, |
| IWL_RATE_24M_INDEX, |
| IWL_RATE_36M_INDEX, |
| IWL_RATE_48M_INDEX, |
| IWL_RATE_54M_INDEX, |
| IWL_RATE_60M_INDEX, |
| IWL_RATE_COUNT, /*FIXME:RS:change to IWL_RATE_INDEX_COUNT,*/ |
| IWL_RATE_COUNT_LEGACY = IWL_RATE_COUNT - 1, /* Excluding 60M */ |
| IWL_RATE_INVM_INDEX = IWL_RATE_COUNT, |
| IWL_RATE_INVALID = IWL_RATE_COUNT, |
| }; |
| |
| enum { |
| IWL_RATE_6M_INDEX_TABLE = 0, |
| IWL_RATE_9M_INDEX_TABLE, |
| IWL_RATE_12M_INDEX_TABLE, |
| IWL_RATE_18M_INDEX_TABLE, |
| IWL_RATE_24M_INDEX_TABLE, |
| IWL_RATE_36M_INDEX_TABLE, |
| IWL_RATE_48M_INDEX_TABLE, |
| IWL_RATE_54M_INDEX_TABLE, |
| IWL_RATE_1M_INDEX_TABLE, |
| IWL_RATE_2M_INDEX_TABLE, |
| IWL_RATE_5M_INDEX_TABLE, |
| IWL_RATE_11M_INDEX_TABLE, |
| IWL_RATE_INVM_INDEX_TABLE = IWL_RATE_INVM_INDEX - 1, |
| }; |
| |
| enum { |
| IWL_FIRST_OFDM_RATE = IWL_RATE_6M_INDEX, |
| IWL_LAST_OFDM_RATE = IWL_RATE_60M_INDEX, |
| IWL_FIRST_CCK_RATE = IWL_RATE_1M_INDEX, |
| IWL_LAST_CCK_RATE = IWL_RATE_11M_INDEX, |
| }; |
| |
| /* #define vs. enum to keep from defaulting to 'large integer' */ |
| #define IWL_RATE_6M_MASK (1 << IWL_RATE_6M_INDEX) |
| #define IWL_RATE_9M_MASK (1 << IWL_RATE_9M_INDEX) |
| #define IWL_RATE_12M_MASK (1 << IWL_RATE_12M_INDEX) |
| #define IWL_RATE_18M_MASK (1 << IWL_RATE_18M_INDEX) |
| #define IWL_RATE_24M_MASK (1 << IWL_RATE_24M_INDEX) |
| #define IWL_RATE_36M_MASK (1 << IWL_RATE_36M_INDEX) |
| #define IWL_RATE_48M_MASK (1 << IWL_RATE_48M_INDEX) |
| #define IWL_RATE_54M_MASK (1 << IWL_RATE_54M_INDEX) |
| #define IWL_RATE_60M_MASK (1 << IWL_RATE_60M_INDEX) |
| #define IWL_RATE_1M_MASK (1 << IWL_RATE_1M_INDEX) |
| #define IWL_RATE_2M_MASK (1 << IWL_RATE_2M_INDEX) |
| #define IWL_RATE_5M_MASK (1 << IWL_RATE_5M_INDEX) |
| #define IWL_RATE_11M_MASK (1 << IWL_RATE_11M_INDEX) |
| |
| /* uCode API values for legacy bit rates, both OFDM and CCK */ |
| enum { |
| IWL_RATE_6M_PLCP = 13, |
| IWL_RATE_9M_PLCP = 15, |
| IWL_RATE_12M_PLCP = 5, |
| IWL_RATE_18M_PLCP = 7, |
| IWL_RATE_24M_PLCP = 9, |
| IWL_RATE_36M_PLCP = 11, |
| IWL_RATE_48M_PLCP = 1, |
| IWL_RATE_54M_PLCP = 3, |
| IWL_RATE_60M_PLCP = 3,/*FIXME:RS:should be removed*/ |
| IWL_RATE_1M_PLCP = 10, |
| IWL_RATE_2M_PLCP = 20, |
| IWL_RATE_5M_PLCP = 55, |
| IWL_RATE_11M_PLCP = 110, |
| /*FIXME:RS:change to IWL_RATE_LEGACY_??M_PLCP */ |
| /*FIXME:RS:add IWL_RATE_LEGACY_INVM_PLCP = 0,*/ |
| }; |
| |
| /* uCode API values for OFDM high-throughput (HT) bit rates */ |
| enum { |
| IWL_RATE_SISO_6M_PLCP = 0, |
| IWL_RATE_SISO_12M_PLCP = 1, |
| IWL_RATE_SISO_18M_PLCP = 2, |
| IWL_RATE_SISO_24M_PLCP = 3, |
| IWL_RATE_SISO_36M_PLCP = 4, |
| IWL_RATE_SISO_48M_PLCP = 5, |
| IWL_RATE_SISO_54M_PLCP = 6, |
| IWL_RATE_SISO_60M_PLCP = 7, |
| IWL_RATE_MIMO2_6M_PLCP = 0x8, |
| IWL_RATE_MIMO2_12M_PLCP = 0x9, |
| IWL_RATE_MIMO2_18M_PLCP = 0xa, |
| IWL_RATE_MIMO2_24M_PLCP = 0xb, |
| IWL_RATE_MIMO2_36M_PLCP = 0xc, |
| IWL_RATE_MIMO2_48M_PLCP = 0xd, |
| IWL_RATE_MIMO2_54M_PLCP = 0xe, |
| IWL_RATE_MIMO2_60M_PLCP = 0xf, |
| IWL_RATE_MIMO3_6M_PLCP = 0x10, |
| IWL_RATE_MIMO3_12M_PLCP = 0x11, |
| IWL_RATE_MIMO3_18M_PLCP = 0x12, |
| IWL_RATE_MIMO3_24M_PLCP = 0x13, |
| IWL_RATE_MIMO3_36M_PLCP = 0x14, |
| IWL_RATE_MIMO3_48M_PLCP = 0x15, |
| IWL_RATE_MIMO3_54M_PLCP = 0x16, |
| IWL_RATE_MIMO3_60M_PLCP = 0x17, |
| IWL_RATE_SISO_INVM_PLCP, |
| IWL_RATE_MIMO2_INVM_PLCP = IWL_RATE_SISO_INVM_PLCP, |
| IWL_RATE_MIMO3_INVM_PLCP = IWL_RATE_SISO_INVM_PLCP, |
| }; |
| |
| /* MAC header values for bit rates */ |
| enum { |
| IWL_RATE_6M_IEEE = 12, |
| IWL_RATE_9M_IEEE = 18, |
| IWL_RATE_12M_IEEE = 24, |
| IWL_RATE_18M_IEEE = 36, |
| IWL_RATE_24M_IEEE = 48, |
| IWL_RATE_36M_IEEE = 72, |
| IWL_RATE_48M_IEEE = 96, |
| IWL_RATE_54M_IEEE = 108, |
| IWL_RATE_60M_IEEE = 120, |
| IWL_RATE_1M_IEEE = 2, |
| IWL_RATE_2M_IEEE = 4, |
| IWL_RATE_5M_IEEE = 11, |
| IWL_RATE_11M_IEEE = 22, |
| }; |
| |
| #define IWL_CCK_BASIC_RATES_MASK \ |
| (IWL_RATE_1M_MASK | \ |
| IWL_RATE_2M_MASK) |
| |
| #define IWL_CCK_RATES_MASK \ |
| (IWL_CCK_BASIC_RATES_MASK | \ |
| IWL_RATE_5M_MASK | \ |
| IWL_RATE_11M_MASK) |
| |
| #define IWL_OFDM_BASIC_RATES_MASK \ |
| (IWL_RATE_6M_MASK | \ |
| IWL_RATE_12M_MASK | \ |
| IWL_RATE_24M_MASK) |
| |
| #define IWL_OFDM_RATES_MASK \ |
| (IWL_OFDM_BASIC_RATES_MASK | \ |
| IWL_RATE_9M_MASK | \ |
| IWL_RATE_18M_MASK | \ |
| IWL_RATE_36M_MASK | \ |
| IWL_RATE_48M_MASK | \ |
| IWL_RATE_54M_MASK) |
| |
| #define IWL_BASIC_RATES_MASK \ |
| (IWL_OFDM_BASIC_RATES_MASK | \ |
| IWL_CCK_BASIC_RATES_MASK) |
| |
| #define IWL_RATES_MASK ((1 << IWL_RATE_COUNT) - 1) |
| |
| #define IWL_INVALID_VALUE -1 |
| |
| #define IWL_MIN_RSSI_VAL -100 |
| #define IWL_MAX_RSSI_VAL 0 |
| |
| /* These values specify how many Tx frame attempts before |
| * searching for a new modulation mode */ |
| #define IWL_LEGACY_FAILURE_LIMIT 160 |
| #define IWL_LEGACY_SUCCESS_LIMIT 480 |
| #define IWL_LEGACY_TABLE_COUNT 160 |
| |
| #define IWL_NONE_LEGACY_FAILURE_LIMIT 400 |
| #define IWL_NONE_LEGACY_SUCCESS_LIMIT 4500 |
| #define IWL_NONE_LEGACY_TABLE_COUNT 1500 |
| |
| /* Success ratio (ACKed / attempted tx frames) values (perfect is 128 * 100) */ |
| #define IWL_RS_GOOD_RATIO 12800 /* 100% */ |
| #define IWL_RATE_SCALE_SWITCH 10880 /* 85% */ |
| #define IWL_RATE_HIGH_TH 10880 /* 85% */ |
| #define IWL_RATE_INCREASE_TH 6400 /* 50% */ |
| #define IWL_RATE_DECREASE_TH 1920 /* 15% */ |
| |
| /* possible actions when in legacy mode */ |
| #define IWL_LEGACY_SWITCH_ANTENNA1 0 |
| #define IWL_LEGACY_SWITCH_ANTENNA2 1 |
| #define IWL_LEGACY_SWITCH_SISO 2 |
| #define IWL_LEGACY_SWITCH_MIMO2_AB 3 |
| #define IWL_LEGACY_SWITCH_MIMO2_AC 4 |
| #define IWL_LEGACY_SWITCH_MIMO2_BC 5 |
| #define IWL_LEGACY_SWITCH_MIMO3_ABC 6 |
| |
| /* possible actions when in siso mode */ |
| #define IWL_SISO_SWITCH_ANTENNA1 0 |
| #define IWL_SISO_SWITCH_ANTENNA2 1 |
| #define IWL_SISO_SWITCH_MIMO2_AB 2 |
| #define IWL_SISO_SWITCH_MIMO2_AC 3 |
| #define IWL_SISO_SWITCH_MIMO2_BC 4 |
| #define IWL_SISO_SWITCH_GI 5 |
| #define IWL_SISO_SWITCH_MIMO3_ABC 6 |
| |
| |
| /* possible actions when in mimo mode */ |
| #define IWL_MIMO2_SWITCH_ANTENNA1 0 |
| #define IWL_MIMO2_SWITCH_ANTENNA2 1 |
| #define IWL_MIMO2_SWITCH_SISO_A 2 |
| #define IWL_MIMO2_SWITCH_SISO_B 3 |
| #define IWL_MIMO2_SWITCH_SISO_C 4 |
| #define IWL_MIMO2_SWITCH_GI 5 |
| #define IWL_MIMO2_SWITCH_MIMO3_ABC 6 |
| |
| |
| /* possible actions when in mimo3 mode */ |
| #define IWL_MIMO3_SWITCH_ANTENNA1 0 |
| #define IWL_MIMO3_SWITCH_ANTENNA2 1 |
| #define IWL_MIMO3_SWITCH_SISO_A 2 |
| #define IWL_MIMO3_SWITCH_SISO_B 3 |
| #define IWL_MIMO3_SWITCH_SISO_C 4 |
| #define IWL_MIMO3_SWITCH_MIMO2_AB 5 |
| #define IWL_MIMO3_SWITCH_MIMO2_AC 6 |
| #define IWL_MIMO3_SWITCH_MIMO2_BC 7 |
| #define IWL_MIMO3_SWITCH_GI 8 |
| |
| |
| #define IWL_MAX_11N_MIMO3_SEARCH IWL_MIMO3_SWITCH_GI |
| #define IWL_MAX_SEARCH IWL_MIMO2_SWITCH_MIMO3_ABC |
| |
| /*FIXME:RS:add possible actions for MIMO3*/ |
| |
| #define IWL_ACTION_LIMIT 3 /* # possible actions */ |
| |
| #define LQ_SIZE 2 /* 2 mode tables: "Active" and "Search" */ |
| |
| /* load per tid defines for A-MPDU activation */ |
| #define IWL_AGG_TPT_THREHOLD 0 |
| #define IWL_AGG_LOAD_THRESHOLD 10 |
| #define IWL_AGG_ALL_TID 0xff |
| #define TID_QUEUE_CELL_SPACING 50 /*mS */ |
| #define TID_QUEUE_MAX_SIZE 20 |
| #define TID_ROUND_VALUE 5 /* mS */ |
| #define TID_MAX_LOAD_COUNT 8 |
| |
| #define TID_MAX_TIME_DIFF ((TID_QUEUE_MAX_SIZE - 1) * TID_QUEUE_CELL_SPACING) |
| #define TIME_WRAP_AROUND(x, y) (((y) > (x)) ? (y) - (x) : (0-(x)) + (y)) |
| |
| extern const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT]; |
| |
| enum iwl_table_type { |
| LQ_NONE, |
| LQ_G, /* legacy types */ |
| LQ_A, |
| LQ_SISO, /* high-throughput types */ |
| LQ_MIMO2, |
| LQ_MIMO3, |
| LQ_MAX, |
| }; |
| |
| #define is_legacy(tbl) (((tbl) == LQ_G) || ((tbl) == LQ_A)) |
| #define is_siso(tbl) ((tbl) == LQ_SISO) |
| #define is_mimo2(tbl) ((tbl) == LQ_MIMO2) |
| #define is_mimo3(tbl) ((tbl) == LQ_MIMO3) |
| #define is_mimo(tbl) (is_mimo2(tbl) || is_mimo3(tbl)) |
| #define is_Ht(tbl) (is_siso(tbl) || is_mimo(tbl)) |
| #define is_a_band(tbl) ((tbl) == LQ_A) |
| #define is_g_and(tbl) ((tbl) == LQ_G) |
| |
| #define ANT_NONE 0x0 |
| #define ANT_A BIT(0) |
| #define ANT_B BIT(1) |
| #define ANT_AB (ANT_A | ANT_B) |
| #define ANT_C BIT(2) |
| #define ANT_AC (ANT_A | ANT_C) |
| #define ANT_BC (ANT_B | ANT_C) |
| #define ANT_ABC (ANT_AB | ANT_C) |
| |
| #define IWL_MAX_MCS_DISPLAY_SIZE 12 |
| |
| struct iwl_rate_mcs_info { |
| char mbps[IWL_MAX_MCS_DISPLAY_SIZE]; |
| char mcs[IWL_MAX_MCS_DISPLAY_SIZE]; |
| }; |
| |
| /** |
| * struct iwl_rate_scale_data -- tx success history for one rate |
| */ |
| struct iwl_rate_scale_data { |
| u64 data; /* bitmap of successful frames */ |
| s32 success_counter; /* number of frames successful */ |
| s32 success_ratio; /* per-cent * 128 */ |
| s32 counter; /* number of frames attempted */ |
| s32 average_tpt; /* success ratio * expected throughput */ |
| unsigned long stamp; |
| }; |
| |
| /** |
| * struct iwl_scale_tbl_info -- tx params and success history for all rates |
| * |
| * There are two of these in struct iwl_lq_sta, |
| * one for "active", and one for "search". |
| */ |
| struct iwl_scale_tbl_info { |
| enum iwl_table_type lq_type; |
| u8 ant_type; |
| u8 is_SGI; /* 1 = short guard interval */ |
| u8 is_ht40; /* 1 = 40 MHz channel width */ |
| u8 is_dup; /* 1 = duplicated data streams */ |
| u8 action; /* change modulation; IWL_[LEGACY/SISO/MIMO]_SWITCH_* */ |
| u8 max_search; /* maximun number of tables we can search */ |
| s32 *expected_tpt; /* throughput metrics; expected_tpt_G, etc. */ |
| u32 current_rate; /* rate_n_flags, uCode API format */ |
| struct iwl_rate_scale_data win[IWL_RATE_COUNT]; /* rate histories */ |
| }; |
| |
| struct iwl_traffic_load { |
| unsigned long time_stamp; /* age of the oldest statistics */ |
| u32 packet_count[TID_QUEUE_MAX_SIZE]; /* packet count in this time |
| * slice */ |
| u32 total; /* total num of packets during the |
| * last TID_MAX_TIME_DIFF */ |
| u8 queue_count; /* number of queues that has |
| * been used since the last cleanup */ |
| u8 head; /* start of the circular buffer */ |
| }; |
| |
| /** |
| * struct iwl_lq_sta -- driver's rate scaling private structure |
| * |
| * Pointer to this gets passed back and forth between driver and mac80211. |
| */ |
| struct iwl_lq_sta { |
| u8 active_tbl; /* index of active table, range 0-1 */ |
| u8 enable_counter; /* indicates HT mode */ |
| u8 stay_in_tbl; /* 1: disallow, 0: allow search for new mode */ |
| u8 search_better_tbl; /* 1: currently trying alternate mode */ |
| s32 last_tpt; |
| |
| /* The following determine when to search for a new mode */ |
| u32 table_count_limit; |
| u32 max_failure_limit; /* # failed frames before new search */ |
| u32 max_success_limit; /* # successful frames before new search */ |
| u32 table_count; |
| u32 total_failed; /* total failed frames, any/all rates */ |
| u32 total_success; /* total successful frames, any/all rates */ |
| u64 flush_timer; /* time staying in mode before new search */ |
| |
| u8 action_counter; /* # mode-switch actions tried */ |
| u8 is_green; |
| u8 is_dup; |
| enum ieee80211_band band; |
| |
| /* The following are bitmaps of rates; IWL_RATE_6M_MASK, etc. */ |
| u32 supp_rates; |
| u16 active_legacy_rate; |
| u16 active_siso_rate; |
| u16 active_mimo2_rate; |
| u16 active_mimo3_rate; |
| s8 max_rate_idx; /* Max rate set by user */ |
| u8 missed_rate_counter; |
| |
| struct iwl_link_quality_cmd lq; |
| struct iwl_scale_tbl_info lq_info[LQ_SIZE]; /* "active", "search" */ |
| struct iwl_traffic_load load[TID_MAX_LOAD_COUNT]; |
| u8 tx_agg_tid_en; |
| #ifdef CONFIG_MAC80211_DEBUGFS |
| struct dentry *rs_sta_dbgfs_scale_table_file; |
| struct dentry *rs_sta_dbgfs_stats_table_file; |
| struct dentry *rs_sta_dbgfs_rate_scale_data_file; |
| struct dentry *rs_sta_dbgfs_tx_agg_tid_en_file; |
| u32 dbg_fixed_rate; |
| #endif |
| struct iwl_priv *drv; |
| |
| /* used to be in sta_info */ |
| int last_txrate_idx; |
| /* last tx rate_n_flags */ |
| u32 last_rate_n_flags; |
| /* packets destined for this STA are aggregated */ |
| u8 is_agg; |
| /* BT traffic this sta was last updated in */ |
| u8 last_bt_traffic; |
| }; |
| |
| static inline u8 num_of_ant(u8 mask) |
| { |
| return !!((mask) & ANT_A) + |
| !!((mask) & ANT_B) + |
| !!((mask) & ANT_C); |
| } |
| |
| static inline u8 first_antenna(u8 mask) |
| { |
| if (mask & ANT_A) |
| return ANT_A; |
| if (mask & ANT_B) |
| return ANT_B; |
| return ANT_C; |
| } |
| |
| |
| /* Initialize station's rate scaling information after adding station */ |
| extern void iwl_rs_rate_init(struct iwl_priv *priv, |
| struct ieee80211_sta *sta, u8 sta_id); |
| |
| /** |
| * iwl_rate_control_register - Register the rate control algorithm callbacks |
| * |
| * Since the rate control algorithm is hardware specific, there is no need |
| * or reason to place it as a stand alone module. The driver can call |
| * iwl_rate_control_register in order to register the rate control callbacks |
| * with the mac80211 subsystem. This should be performed prior to calling |
| * ieee80211_register_hw |
| * |
| */ |
| extern int iwlagn_rate_control_register(void); |
| |
| /** |
| * iwl_rate_control_unregister - Unregister the rate control callbacks |
| * |
| * This should be called after calling ieee80211_unregister_hw, but before |
| * the driver is unloaded. |
| */ |
| extern void iwlagn_rate_control_unregister(void); |
| |
| #endif /* __iwl_agn__rs__ */ |
